Electrolysis

Label the Electrolysis diagram

a

b

c

d

e

f

g

cathode

cell

non-metal ion (negative)

electolyte

beaker

anode

metal ion (positive)

Match the keywords

• Attracted to the cathode

• 
• The liquid in the beaker

• 
• made of metals and non-metals

• 
• Splitting up using electricity

• 
• Attracted to the anode

• 

​ (a)   lead bromide is split up using​ (b)   . The lead ions travel to the ​ (c)   and the bromine ions travel to the ​ anode . When the ions arrive at the electrodes they gain or lose​ ​ (d)   and then turn into atoms.

• electrolysis
• neutralisation
• Molten
• solid
• cathode
• electrons
• protons

Select the correct half equation to show the reduction of magnesium

• 1. Mg 2+ + 2e- → Mg

• 1. Mg 2+ + 4e- → Mg

Which is the correct half equation of the reduction of aluminium?

• 1. Al3+ + 3e- → Al

• 1. Al3+ + 6e- → Al

Which half equation is the correct half equation for the oxidation of chlorine?

• 1. 2Cl- → Cl₂ + 2e-

• 1. 2Cl- → Cl₂ + 3e-

Write your answers below.

What is the gradient in mg per min?

The molten mixture contains ​ (a)   and aluminium ​ (b)  

• cryolite
• carbon
• chloride
• oxide
• sulfate
• water

Label the diagram of the electrolysis of aluminium oxide.

The aluminium is collected off at the bottom.

a

b

c

d

cathodes that line the cell

anodes made of inert graphite (carbon)

Aluminium oxide and cryolite

molten aluminium collects here